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Page 8 Crathco
®
5000 Series Manual
Computing Overrun (cont.)
3) Draw a heaping cup of frozen product that contains no air pockets. Note: Use a spatula or other device to
help fill the cup completely. Avoid tamping the cup as this artificially reduces overrun.
4) Use a straight edge to scrape off excess product flush with the rim of the cup and weigh the cup.
5) Subtract the cup weight and use the overrun formula to determine overrun.
For Example:
If a full cup of liquid mix weighs 23 ounces (.652kg) and a full cup of frozen product weighs 15-1/2 ounces (.439kg),
then:
Note: Several companies manufacture scales that automatically read out the overrun for one-pint samples. A
scale of this type is a valuable tool and should be part of any well run operation. A trick is to place the empty cup
on the scale and zero it out first; this will then automatically eliminate the weight of the cup from the calculation.
Overrun has a major impact on the size of the finished frozen portion. As the percentage of overrun (air in the
frozen product) increases, the size of the finished portion also increases, yet the portion weight remains the same.
For example, an increase from 25% to 50% overrun will yield a 20% larger portion. Customers equate size with
perceived value so proper overrun will result in increased customer satisfaction. Experiment with carburetor
settings to achieve optimum overrun and product quality with each mix. Some products such as Cappuccino taste
better with low overrun. Experiment with different carburetor settings to find the ideal combination for each product.
Use of Stand-By Switch
The "STAND-BY" switch allows the operator to retain optimum product quality and conserve energy during
extended non-draw periods. The "Stand-by" mode keeps the mix in the hopper at a safe storage temperature
and allows the product in the freezing cylinder to return to a refrigerated liquid state. Switching back to "ON"
quickly returns the product in the freezing cylinder to proper serving consistency.
At the start of the "STAND-BY" period:
1) Select the "STAND-BY" mode by moving the mode switch to the middle position. The front panel
"STAND-BY" light will illuminate.
At the end of the "STAND-BY" period:
1) Turn the switch to the "FREEZE" position by moving the mode switch. The "FREEZE" light will illuminate.
2) When the freezer cycles off by reaching the desired temperatures you are ready to start serving.
IMPORTANT: The STAND-BY SWITCH should not be used in lieu of cleaning and
sanitizing procedures specified by local regulatory agencies.
Mix Low Function
This model will sense when the mix is low in the hopper. The mix low light will illuminate continuously for 2 min-
utes. After 2 minutes the light will begin to blink off and on for the next 8 minutes. The buzzer in the mix out circuit
is 2 minutes off and 5 seconds (or 5 beeps) on for a total of 10 minutes. At the end of the 10-minute time the
Weight of
Liquid Mix
Weight of
Frozen Product
(Minus)
x 100 = OVERRUN
Weight of Frozen Product
23-15 1/2
x 100 = 48.4% Overrun
15 1/2